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Modified magnesium oxychloride cement product and preparation method thereof

A technology of magnesium oxychloride cement and products, which is applied in the field of preparation of modified magnesium oxychloride cement, which can solve problems such as poor water resistance, abrasive wear, and poor surface finish, and achieve good surface finish, enhanced water resistance, and flexural strength Improved effect

Inactive Publication Date: 2011-12-21
SOUTHEAST UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] technical problem: In order to solve the problems of poor water resistance of magnesium oxychloride cement, easy to return brine and blooming, poor mechanical strength and surface finish of glass fiber reinforced products, and serious abrasive wear during processing, the invention provides a modified oxychloride Magnesium cement product and its preparation method
And it effectively solves the problems of glass fiber reinforced products such as poor mechanical strength, poor surface finish, and severe abrasive wear during processing.

Method used

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  • Modified magnesium oxychloride cement product and preparation method thereof
  • Modified magnesium oxychloride cement product and preparation method thereof
  • Modified magnesium oxychloride cement product and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0026] Modified magnesium oxychloride cement products are composed of the following components and proportions: light burnt magnesium oxide powder (containing 75-95% wt MgO): 100 parts; magnesium chloride (anhydrous MgCl) 2 ): 10 parts; water: 140 parts; calcium carbonate whiskers: 5 parts; silane coupling agent KH-570: 0.05 parts; sodium dodecylbenzene sulfonate: 5 parts.

[0027]

Embodiment 2

[0029] Modified magnesium oxychloride cement products are composed of the following components and proportions: light burnt magnesium oxide powder (containing 75-95% wt MgO): 100 parts; magnesium chloride (anhydrous MgCl) 2 ): 10 parts; water: 140 parts; calcium carbonate whiskers: 10 parts; silane coupling agent KH-570: 0.1 parts; sodium dodecylbenzene sulfonate: 5 parts.

[0030]

Embodiment 3

[0032] Modified magnesium oxychloride cement products are composed of the following components and proportions: light burnt magnesium oxide powder (containing 75-95% wt MgO): 100 parts; magnesium chloride (anhydrous MgCl) 2 ): 10 parts; water: 140 parts; calcium carbonate whiskers: 15 parts; silane coupling agent KH-570: 0.15 parts; sodium dodecylbenzene sulfonate: 5 parts.

[0033]

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Abstract

The invention discloses a modified magnesium oxychloride cement product and a preparation method thereof. The modified magnesium oxychloride cement product comprises the following components in part: 100 parts of light burned magnesium oxide powder (75-to-95-weight-percent MgO), 10 to 75 parts of magnesium chloride (absolute MgCl2), 100 to 150 parts of water, 2 to 50 parts of crystal whiskers, 0.02 to 0.5 part of crystal whisker surface modifier and 2 to 20 parts of anionic surfactant. The modified magnesium oxychloride cement product provided by the invention has high water resistance, excellent surface finishment and high breaking strength and is insusceptible to re-bittering. In addition, the problems of low mechanical strength and low surface finishment of products, serious wear of grinding tool and the like of reinforcement by glass fiber are solved effectively.

Description

[0001] technical field [0002] The invention belongs to the preparation technology of modified magnesium oxychloride cement, in particular to whisker and surfactant compound modified magnesium oxychloride cement and a preparation method thereof. [0003] technical background [0004] With the rapid development of my country's economic construction, people's demand for infrastructure materials such as cement and wood is increasing day by day. This makes energy crisis, environmental pollution and other issues more and more serious. Magnesium oxychloride cement products are widely used in construction, transportation, industrial , agriculture and other fields. [0005] However, magnesium oxychloride cement also has many disadvantages, such as easy cracking, warping deformation, poor water resistance, brine and frost, etc., which seriously restrict its development. [0006] Whisker is a high-performance reinforcing material with high strength, high modulus, wear resistance ...

Claims

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Application Information

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IPC IPC(8): C04B28/32
Inventor 孙岳明马艺文王育乔孙华宁齐齐
Owner SOUTHEAST UNIV